Binder.



A. DOM. BINDER. APPLICATION FILED MAY 10. i916- 1,241,61 0.' Patented Oct. 2,1917.

T hinged portion 2 constituting one of the T TED smrr PATENT omen.

" Be it known that I, ALEXANDER DOM; a

citizen f the United States, and re'siding fat :Gincihnati, :in the county of: Hamilton 51 and State of Ohio, have invented a new and useful 'Improvementin Binders, of which closure. I I l My invention relates to an improvement in what is commonly known as a snapbinder designed to hold loose leaves v :fbook form under spring compression'of the covers, the spring providing the normal inward snap tension and opening to accom- 'modate and retain a greater or lesser number of leaves.

" The object of the invention is to provide a hinged constructionfor the binding element havlng no inward extenslons but presenting a smooth or flat surface in rear of a the clamped portion of the leaf margi *enabling the latter to be properly compiled it and alined and placed in extreme rearward position between the binding elements, abutting the smooth or fiat surface of the hinged structure, the lateral extensions of which I project rearwardly or exterior of the binder back., I Another object of the invention is to provide such. a hinged construction with an 4 opening limit member, also supported and i extending rearwardly of the binder back.

. The features of the invention are more [fully set forth in the description of the accompanying drawings, forming .a part of this specification, in which: J Figure 1 isaside elevation of the binder. Fig. 2 isa sectionthrough thehinged portion of the binder in open position, showing the stop member in full lines. Fig. 3 is an elevation from the right side T ofFig. 2. I a

Fig.4 is a rear elevation, partly broken ay, to SllOWthB stop 'member.

Fig. 5 is a detail perspective view of one of the stop members.

" The binder preferably is a. sheet metal structure comprising the top cover members i 2,2 hinged to ether-by eyes 3 and hingerod. 4 toward t ebaok of the binder, the

binding elements. The, rear margin'of the cover member 2 is formed with a downi turned flange 5 terminating with a series the following specification is a full r'disi r coMrAn Y, or CINCINNATI, OHIO, A CORPORATION OF .oHIo.

. ti e? I 1 atented 0a. 2, 191%.

llppiication'iil'ed May 10, 1 91s. serial Nb. 96;564.

aline'd; The under cover 1 constitutes the coacting binder element and is preferably integral; its-rearend is formed with "upturned flanges 7 terminatihg iv itha series of outwardly o'r rearwardly l'o'opedleyes S, horizontally alinetl and similar in form to the "eyes 6, the-upper and 'lo'we'r sets o'f eyes being alternately spaced to inter-mesh and bring the two setsof' eyes into registration for supporting the hinge rod 9, which is thus held on the rear or enter portion of the-binder back, so that the inner surfaces 10, of the two flanges present a smooth or fiat contour which will not interfere with the compilation and alinement of the rear edges of the leaves 11, the hinge rod and the eyes being rearwardly extended and housed within the binder back 12.

Said back is a resilient bow, the extremities of which engage or are attached to the binder elements 2 and 6, the spring back 12 in one position of the binding elements exerting a normal inward tension, tending to force them together to grip the interposed leaves, and in the other position the tension reverses to open up the binding elements. Of course it will be understood that the inward tension of the back 12 tends to close the binder with a snap, on one side of the center of movement, and tends to throw the binder elements apart when they are moved beyond this center. In order to provide a limit to this separating movement of the binder elements under the influence of the spring back, I support on the hinge rod one or more struts 13, having the semi-eyes 14 which engage over the hinge rod at appropriate spaces formed between the two cover flanges, the ends 15 of the struts being rearwardlv extended and housed within the spring back, as shown in Fig. 1, which brings the rounded or hearing portions of, the struts into alinement with the eyes of the flanges flush with the inside surface of the binder back, so as to preserve the regularity of the said inner surface.

When the c vers are opened up past the center, the spring will force them apart until the flanges of the covers are stopped by contact with the strut ends 15, as shown in Fig. 2, thus limiting the outward swing and holding the binding elements in a predetermined leaf receiving position and when the binding elements are compressed they will snap to closed or binding position.

are secured to the flanges 5 and 7 and ex tend outwardly beyond the outersurfaces of the cover members, thereby forming a pocket or groove into which the inturned marginal edges 22 of the spring back engage.

I claim 1. In a device of the nature disclosed, top and bottom leaf binder members formed with down and up turned flanges, terminating in outturned, horizontally alined. intermeshing bearings, ahinge rod supportedin said bearings, a stop member on said rod Y with its ends extended rearwardly of said hinge rod in the path of movement of the opening binder members, to determine the leaf receiving position, and a spring back connecting said binder members and inclosmg sa1d rod and stop.

2. In a device of the nature disclosed, two

leaf binder members having inturned flanges terminating with intermeshing hinge elements, a hinge rod joining said hinge elements, a stop member on said rod extending outwardly to intercept the inturned flanges to limit the opening movements of the Witnesses:

CLARENCE B. Fos'rER, L. A. BECK.

ALEXANDER DOM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. i

. Washington, I). O. i 

